AZ23B56-E3-08

Overview

The Vishay AZ23B56-E3-08 is a dual common anode silicon planar Zener diode in an SOT-23 package. It provides a nominal Zener voltage of 56 V with a ±2% tolerance, tested at 2 mA. The device features a maximum reverse leakage current of 42 μA and dynamic resistance values of 135 Ω (at IZT1) and 425 Ω (at IZT2). Operating temperatures range from -55 °C to +150 °C, with power dissipation rated at 300 mW on FR-4 boards.

Feature Summary

• Dual common anode configuration for space-efficient circuit designs
• High ESD protection capability exceeding 8 kV via human body model
• RoHS-compliant commercial grade construction

Applications

• Voltage reference circuits requiring dual polarity or differential sensing
• ESD protection networks in signal conditioning paths
• Overvoltage clamping in low-power consumer electronics

Procurement Notes

Verify the specific suffix against official documentation before procurement. Ordering codes define critical parameters such as tolerance and qualification status. Confirm that the requested variant matches the exact electrical specifications required for the target application environment.

Selection Notes

Select this component when a precise 56 V reference is needed alongside a secondary voltage function within a single footprint. The dual common anode structure allows independent operation of two Zener junctions. Ensure thermal management accommodates the specified power dissipation limits under continuous load conditions.

Part Context

This part belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of standardized voltages up to 75 V. The 'B' designation indicates tighter manufacturing tolerances compared to standard commercial grades.

Replacement Considerations

Cross-reference with other AZ23 series variants for different voltage levels. Verify pinout compatibility if substituting with similar dual common anode packages from other manufacturers.